We're not going to add direct Facebook sharing support, or any other platforms, because iOS already has a scheme in place for sharing files between apps.In Music Studio's projects screen, go to the Audio folder, select an audio file, tap Share and select "Open with". This opens the iOS window for sending files to other apps. If the Facebook app is not on the list, this means that it doesn't accept audio files. You could contact Facebook support and ask for this feature, so that audio files from all apps can be opened with Facebook.